Snubbing-machine.



H. C. CURRIER.

SNUBBING MACHINE. Y APPLICATION man fEB.9,191a.

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H. C. CURRIER.

SNUBBING MACHINE. APPLxcATmN FILED Film1. 191s.

Patented July 23, 1918.

2 SHEETS-SHEET 2.

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HENRY o. comuna, oF- RUMFORD, MAINE.

SNUBBING-MACHINE.

Toall whom it moyoonoern.: Y

Be it known that I., Henny C; Cunnrnn,

'a citizen of the UnitedStates oAmerica,l

and resid'entof Rumforlch- -injthe eounty.v of

OefOrifl andfSteteiOfMeinepleie invented lowered. supporting. meane, se'that it' fnievf be usedffer anothen load; While one'eftle leaded'carryingi means. is. descending thus making itfr automatic in,operation while at' thel .same time afo'rdingmeans y for 'creatingfrietien toI prerentfthe. lead@ frem, 'traveling' at a damegegspeedfergetting 'beyendcontrelfilrtedeseentg Q 'further .bject of thisim'enti'onlisto providefriction, creating members overV whieh ajflexible deyi'ceis woundfand'novely meelefer elem ine-fthe flexiblemember. er increasing the getlenlel "Contact thereof Se thatit/iv-i1'1,`0rerete eeabrake for Safeguard? ing the action of @hedevice':` and" al stillj further -1 bj eet( Ot the'. imentierl ie t0.91'0- vde. drums 'with pulleysv connected by flexible.' member,aeeoeietedf with .means for retardng, the travel', ofthe flexible memberand therefore` retarding the motion offthe drums over which. thevlflexible 'memb'enope eratesgV i With, the feregfliplegL and. otherobjectsY in' yiem'the invention consists in `the:.details ofeenetrueten?. andA in the arrangement and' Combination offra-HS, t behereinafter more' fully Setferbhandelamed-; L

In describing 'the invention in; detaihlref; elenee VWill. be. had; tothe aeeenlpenyng drawings forming part offthe Specification, Whererlikecharla-etere denQte Corresp Ondey ing parts in the several?V Views-5l,andi in Wh h v FigureA -1 i.11,uretrete@ a. planavew. o'fjmv inrentien;

' Fig; Q 'llustretee a/Sijde'eevetien;

Ii'gtY 3 illustrates a. rear end View thereof;

and Y Fig;` illustrates a detellg-vlew. efieilejof thefnetienpineree-eingdevices;. t,

tee t0; frietileh applying] f, speculation of Letters Patent. v Patented,m1352555 1918, Application filed fllebruary 9, 1318. Serial No,216,194. t I

In these drawings denotes ayframe havmgA pairs 'of journal' bearings 11,125 13,'A 14 and employed for rotatably supporting shafts, as willlpresently'appear.` Y

The' size of' the device may be Ichang'edto, suitpartieular requirements-and I,` therefore,vdo not wish tobe limitedwithrespe'ct totheproportions.

:Nea-r' the rear end of' the frame, thereV` is an inclined: sill: '16,having pintles or shafts 17" and 18 for the ygrox'fed-*pulleysv19- and2,0 respectively- The shafts 17' and 18 are inclined: so vthat thepulleys which rotateir them are tiltedv Lor otherwise loblioluely; disposed sothat Y the' 'flexible' member' 21' which runs vover them travelsobliquely at the 'rear ofthe'frarne; A double drum-l-22hasa shaft' 23;in the bearing 11 and the 'fleXiblel mem? ber 2,1is overwound on'oneendfofthe drum and' under-wound on, the-otherend ofthe drum and' said'underwound` portion is first engaged' by the pulley 19, thenrunningsnp;

to the pulley and overwindin Vonl the drum vat.l the end opposite the unrwfound; Y

portion. lAnother' drum 24 ismounted'on a shaft 25 in thebe'arings 1 2andthe flexible memberiis wound on thedrum', anumber of convolutionsbeing, appliedto,l the drumj'so;

as toVV increase the Yfrictionfof Vthe 'drums 'as the flexible member ismovedg' A"'shalftf26"A isfjournaled vinthe bearings 13jandfit has doublegrooved pulleys 2'1 ar`1df28'onV it arounduwhih 'the' flexiblemember,is'L also wound andV the. extensions'gof*that p art of the flexiblemember that'li'a'sbeen 'described travel with relation l to the'framegionejend' 2 9.' moving in one" direction whilef'thegendi 3Q istravelingy in the:oppositeidirectionf;A that is to say ,iffthe 'end'29"has aicouplin'gof any appropriate Y style, i it is attachedto a3 loadbeing lowered', then 'the' end" of. the

the barrr is pressed into engagement" with the'.

lor

belt or flexible member to retardlthe rotation of the drums, thuscontrolling the rapidity of travel of the flexible member,

regardless of the load.

A guide roll 37 is mounted on a stud 38" shafty will oscillate somewhatand I mount.

a pulley, or drum44 on' the said shaft so that the-pulley or drum can beforced into engagement with the flexible member and clamp -it againsteither the pulley 39 or 40,

and I accomplish the -result vby means of a lever 45, which lever isVconnected to the shaft 43,011 a `pintle 46 rising from the post 47 ofthe frame, so that as the lever is moved on itspivot or pintle, it willclamp the Y flexible member against one of the pulleys.

Itis also the purpose of the inventor to have the pulley or frame ofsuch construction that it will contact either the pulley 39 or thepulley 40 as it is moved by the lever, and to that end, itis slightlytapered or beveled so that when it assumes an inclined position as itmust to be forced into engagement with the pulleys, it will have a`largev area of its surface in contact with the pulley toward which it ismoved and the friction will vbe increased and add to the efficiencyofthe device.

vIt is to be understood, of course, Athat if a log is attached' to oneofrtheextensions of thevile'xible member and itis to belowered down a`steep incline, an operator:V would actuate the'parts ofthe mechanism topermit the logto slowly descend and the frictionl applied to the drumswould be regulated'according to the requirements and as one of theextensions of the flexible member wouldbe returning as the other isdescending there would be continuous operation of the load loweringdevice except'during the time that the couplings were being applied toor removed from the load.

It has beenY found that a device made in accordance with this inventionis comparatively inexpensive and has proven eflicient and satisfactoryin use, as well as strong and durable. A

I claim: Y

l. rIn a snubbing machine, a frame having aninclined sill near the rearend, inclined pulley supporting members on the sill, pulleysmoun'ted onthe inclined members at different heights, a drum, a flexible memberoperating over the pulleys, the section of the flexible member runningfrom the lowermost pulley being underwoundpon the drumV and the sectionrunning from the upper pulley being overwound on the said drum, a'second drum around which the flexible member is wound, extensions ofsaid flexible member adapted for attachment to loads, a shaft havingpulleys around which the extensions are wound,- yand means for guidingthe extensions. 7

2.. In a snubbngmachine, a frame having an inclined sill near the rearend, inclined pulley supporting 'members 0n the sill,vpul leys mountedon the inclined members at different heights, a drum, a flexible memberoperating over the pulleys, the section of the flexible memberI runningfrom the lowermost pulley being underwound on the drum and the sectionrunning from the 'upper pulley being overwound on the said drum, alsecond drum around which 'the flexible member is Wound, extensions ofsaid flexible member adapted for attachment to, loads, a shaft havingpulleys aroundV whichk the extensions are wound, means for guiding theextensions, pulleys having vertical axes with which the flexibleextending members coact, and amember adapted to Vengage either of saidpulleys for braking the pulleys.

3. Ina snubbing machine, a frame having an inclined sill near the rea-rend, inclined pulley supporting members on the sill, .pulleys'mounted onthe, inclined members at different heights, al drum, a flexible memberoperating over the pulleys, the section'v of the flexible member runningfrom the lowermost pulley being underwound on the drum and the sectionrunning from the ,upperY pulley being overwound on the said drum, asecond drum around which the flexible member is Wound, extensions ofsaid flexibleV member adapted for attachment to loads, a shaft havingpulleys around which the eX- tensions are wound, means for guiding theextensions, pulleys having vertical axes with which the flexibleextending members coact, an oscillatingly mounted shaft, a memberrotatable thereon and means for oscillatingl the shaft whereby said lastmentioned member ismoved into engagement v with either of thep'ulleys i4. In a snubbing machine, a frame having an inclined sill near'the rearend, inclined pulley supporting members on the sill, pulleys mounted onthe inclined members at different heights, a drum, a flexible memberoperating over the pulleys, the section of the flexible member runningfrom the lowermost pulley being underwound on the drum and the sectionruiming from the upper pulley being overwound on the, said drum, asecond drum around which the flexible member is wound, a brake for thedrums, extensions of said fiexible member adapted for attachment toloads, a shaft having double grooved pulleys around which the extensionsare Wound, and means for guiding the extensions.

5. In a snubbing machine, a frame having an inclined sill near the rearend, inclined pulley supporting members on the sill, pulleys mounted onthe inclined members at different heights, a drum, a flexible memberoperating over the pulleys, the section of the flexible member runningfrom the lowermost pulley being underwound on the drum ley beingoverwound on the said drum, a

second drum around Which the flexible member is Wound, extensions ofsaid iexible member adapted for attachment to loads, a shaft havingdouble grooved pulleys around which the extensions are Wound, means forguiding the extensions, pulleys having vertical axes'With Which theflexible extending members coact, a member adapted .to engage either ofsaid pulleys for braking the pulleys, and a brake for the drums.

HENRY C. CURRIER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, 1D. C. l i

